About this river
Neponset River is an 11.3 mile river near Constitution Marina in Massachusetts. Streamflow is measured at the USGS gauge Neponset River at Milton Village, MA (site 011055566). The National Hydrography Dataset places it at stream order 5. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1997 to 2026
Neponset River typically runs highest in March, at a median 446 cfs, and lowest in September, at 54 cfs. The highest flow on record for any single day is 3,040 cfs, in 2010.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 309 | 206 to 482 | |
| February | 318 | 221 to 445 | |
| March | 446 | 297 to 659 | |
| April | 430 | 252 to 690 | |
| May | 268 | 162 to 382 | |
| June | 170 | 99 to 321 | |
| July | 93 | 45 to 213 | |
| August | 65 | 36 to 116 | |
| September | 54 | 30 to 124 | |
| October | 90 | 44 to 187 | |
| November | 155 | 93 to 304 | |
| December | 292 | 117 to 578 |
Typical is the median of each month’s daily median values, and the usual range runs from the median 25th to the median 75th percentile, across about 30 years of record. Statistics published by the US Geological Survey for Neponset River at Milton Village, MA (site 011055566). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Boat access nearby
One mapped launch sits in the mapped area of Neponset River. Ramp data comes from the USGS national boat-ramp inventory.
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Neponset River's live streamflow, water level and 7-day trend. It reads the USGS gauge directly, updates itself, and links back here.
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